Lighting fixture



Oct. 7, 1930. 3 5 HANNA LIGHTING FIXTURE Filed Nov. 15, 1926 AT TORNEYS would ordinarily Patented Oct. 7, 1930 UNITED STA TES'gPATENTOFFICE. i

' DAVID B. HANNA, or CHICAGO, rumors Iiren'rine FIXTURE" Application fi led. November is, 1926. seriaim. 148,137;

This invention relates to lighting fixtures, and particularly to street lighting lamps or fixtures. Such lights are ordinarily arranged either to distribute the light equally around 5 the post throughthe 360, or else to give an asymmetric" distribution. fThe latter type usually employs an asymmetric refractor which diverts or redistributes "to the street side of thelamp a portion of the light which be thrown to the sidewalk side ot the lamp. L

One of the primary objects of my invention is to insure proper distribution of the light from an asymmetric lamp;

More'particularly, it is an object of the inventionto provide means for adjusting, and maintaining the adjustment of, the refractor. Another object of the invention is to make possible proper adjustment of the retractor, g both with relation to the center of light of j the bulb or other source of light andwith rela tion to the streetandsidewalk sides ofthe fixture, while the lamp is in position and "burning. j v j u Still another object of the invention is the provision of apparatus of the character out lined above wherein the refractor, reflector,

placed as a'unittor purposes of cleaning or repair.

Howthese,'and other advantages which are incident to my invention or may occur to those "skilled in the art, are obtained, willbe clear j from the following description of thepresent I preferred embodiment ofthe invention,lre:t-j

' v 1 erence beinghadto j the accompanying drawings, wherein: l r

Fig. 1 is a vertical section on the line 1 -1 of Fig. 2 with certain parts elevation, illuso l mating a street g ti g fiXt'ure embodyin myjimprovements; and.

the cover of the fixture removed, illustrating "14 particularly the adjustable, three-armed sup- 5 ort. i i I j Referringfirst to Fig. 1, it will be seen that I have thereinillustr'ated a street lighting fixture 2, which as to outward form may beof to any suitable type,'having a cover 3 and'base 4, and which may be supported'in any preferred manner, as by hanging from a support,

or by mounting, as here shown, on apost or standard 5 by screws or bolts 6. Supported from the ba'se4, as by the bar 7 and bolts 8, l is a lamp socket 9 with its lamp 10. I have shown a fixedsocket, since my inventionobviates any necessity for adjustingthe position of the lamp, but it will be understood, iof course, that an adjustable socket or socketsupport maybe used. The lower reflector'll maybe mounted, as shown, on ashoulder o annular rib 12inside the base.

Above thelamp' 10 I support the assymnetricrefractor l3 andthe upper refle ctorl, 1n the following manner: A spider or threearmed support 15,- with an adjusting screw 16 at the end ofeach arm is supported within the shell of the fixture 2 on three cupshaped lugs or bosses 17. At the juncture of i thearms-of the spider is carried athreaded bolt or rod- 18,-bearing atits lower end the strap orbridge-piece 19 of an annular sup-' porting member 20 which, in turn, carries on its periphery the reflector 14, and within'it the nut or threaded body portion 21. ,The

'refractor '13, is clamped at the top by the .and their support, may be removed and re-' external ring 22 and internal threaded ring 2 the latter being adaptedto be screwed up "tlght into the threaded bodyior nut 21 of the supporting member 20. Upper and lower compared to the opposite side. From the foregoing it will be obvious that the asymmetric refractor'may be adjusted in three ways relative to the source of light.

g 2 is p planrlvirew Ofthe devlce l Fnst, it may e raisedor owered vertically (the'upper reflectormoving therewith) for 360 of its circleinorder to have 'its side 1 contour of the right-hand side 13 thereof as l of greaterlightdistributio'njatany desired place, fas iiofinstance, on the street sideof the lamp} Third, it may be set level-ortilted in any direction, by means of the three screws 16, which also give additional vertical adjustment when necessary.

It will now be clear that adjustment may be made with the lamp bulb in place and burning, so that proper focussing and distribution of light are assured, which is not generally possible with the lights now commonly employed; and also that maladjustment is provided against by the lock nuts 24 and 25 which are tightened up after proper adjustment has been made.

The whole assembly of refractor, reflector, and supporting structure may, for cleaning or replacement of parts, be lifted out of the fixture from above as a unit, thus simplifying, and reducing the labor and expense incident to, the maintenance of the lamp.

I claim I. In a lighting fixture, the combination of a refractor, a reflector, and a common support therefor inherently adjustable with relation to the fixture and removable therefrom and replaceable therein as a unit withoutdisturbing the adjustment.

2. In a lighting fixture, the combination of a refractor, a threaded support therefor, a spider in which a portion of said support is adapted to be screwed, and means at the feet of the spider supporting the same. from thefixture. j

3. In a lighting fixture, the combination of a refractor, a threadedsupport therefor, a spider in which a portion of said support is adapted to be screwed, and means at the feet of the spider supporting the same from the fixture, including an adjusting screw at each foot.

4. In a lighting fixture, the combination of a refractor, a threaded support therefor, a spider in which a portion of said support is adapted to be screwed, and means at the feet of the spider supporting the same from the fixture, together with locking means on the threaded support adapted to engage the Spider.

5. In a lighting fixture, the combinationof a refractor, a threaded support therefor, a spider in which a portion of said support is adapted to be screwed, and means at the feet of the spider supporting the same; from the fixture, together with a reflector mounted on the refractor support.

6. In a lighting fixture, a support for a retractor and a reflector comprising an annular portion internally threaded and adapted to 1 carry the reflector on its periphery, gripping means for the refractorthreaded in said pornula r portion internally threaded, and adapted to carry the reflector on its periphery, gripping means for the refractor threaded in said portion, means attached to said annular portion having a screw portion, a

spider in which said means is adjustably screwed, and adjustable supports for the spider feet together with lock nuts on said screw portion. a

8. In combination with a lighting fixture and its light, a refractor supported above the 9. In a fixture having an illuminating element, a light distributor associated there with, and a multipart supporting structure having a normally fixed mounting on tlp fixture and a normaly fixed connection to the distributor to support the same, parts of said structure being relatively adjustable one to another, and said structure and distributor being freely liftable as a unit from said mounting.

l0. In av fixture, a lighting element, a light distributor associated therewith, a support for the distributor, and fixed seats in the fixture on which said support is removably seated, said support including a plurality of relatively adjustable elements to provide adjustments of the distributor with respect to the lighting element, and means for maintaining adjustments of said relatively adjust able elements to prevent maladjustment thereof upon removal of the structure from the fixture.

11. lighting fixture having an illuminat- 111 element mounted therein and a light distributor supported independently thereof from an upper portion of the fixture, seating means in said upper portion, and a supporting device for the distributor capable of being lowered upon and lifted from said seating means from above, said device including relatively adjustable parts providing universal adjustment of the distributor with respect to the illuminating element.

12. A lighting fixture having an illuminating element mounted therein and a light dis tributor supported independently thereof from an upper portion of the fixture, seating means in said upper portion, and a supporting device for the distributor capable of being lowered upon and lifted from said seating means from above, said device including relatively adjustable parts providing universal adjustment of the distributor with respect to the illuminating element, together with. means for maintaining adjustments when the supporting device is lifted outof the fixture.

. 13. The combination, with a lighting fixture and its illuminating element, of an asymmetric light distributor disposed around said element, means whereby said distributor may lUO so said structure except sa d element belng liftbe rotated to alter the directions of the asymmetric rays, and means for altering the angle of its axis with respect to said element.

14. The combination, with a lighting fixture and its illuminating element, of an asymmetric light distributor disposed around said element, means whereby said distributor may be rotated to alter the directions of the asymmetric rays, and means for altering the angle of its axis with respect to said element, together with means for shifting the distributor along the line of its axis.

15. In combination, a fixture having a lighting element, an asymmetric light distributor cooperating with said element, and a supporting device for the distributor on the fixture, said support including means for rotating the distributor With respect to said element, means for altering the angle of its axis with respect thereto, and means for shifting its position along the line of its axis.

16. In combination, a fixture having a lighting element, an asymmetric light distributor cooperating with said element, and a supporting device for the distributor on the fixture, said support including means for ro-' tating the distributor with respect to said element, means for altering the angle of its axis with respect thereto, and means for shifting its position along the line of its axis, all of able from and seatable in said fixture as a .unlt without disturbing the adjustment of said several means.

. 17 The combination, "with a lighting fixture and its illuminating element, of an asymmetric light distributor disposed around said element, means whereby said distributor may i be rotated to alter the directions of the asymmetric rays, and meansfor shifting the distributor along the line of its axis. In testimony whereof, I have signed my name. a DAVID B. HANNA.

hereunto 

